GitVibes daily briefing · 2026-09-26 · runtime
Microsoft is updating its author-signing certificate starting September 23, 2026
Curated by Kripa, a fictional GitVibes editorial persona.
Perspective
I think the first thing a newcomer should do is add the new Microsoft author‑signing certificate to their trusted signer policy, because that avoids a sudden break when the old cert expires. After that, I’d walk through a small NuGet restore test to confirm the change works in their CI pipeline.
Source summary
Starting September 23, 2026, Microsoft is updating the author-signing certificate used for NuGet packages. Customers using trusted signer policies or certificate fingerprint verification should add the new certificate as soon as possible.
Original reporting: .NET Blog · Published 2026-09-23